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Posted to issues@trafodion.apache.org by "Selvaganesan Govindarajan (JIRA)" <ji...@apache.org> on 2018/01/03 19:41:00 UTC
[jira] [Resolved] (TRAFODION-2853) Memory leak of ComDiagsArea in
Context
[ https://issues.apache.org/jira/browse/TRAFODION-2853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Selvaganesan Govindarajan resolved TRAFODION-2853.
--------------------------------------------------
Resolution: Fixed
> Memory leak of ComDiagsArea in Context
> --------------------------------------
>
> Key: TRAFODION-2853
> URL: https://issues.apache.org/jira/browse/TRAFODION-2853
> Project: Apache Trafodion
> Issue Type: Bug
> Components: sql-exe
> Affects Versions: any
> Reporter: Selvaganesan Govindarajan
> Assignee: Selvaganesan Govindarajan
> Fix For: 2.3
>
>
> There were instances that the executor master process has more than 1 GB of memory account memory allocated, Looking at the size of allocation by traversing the heap, it was found ComDiagsArea is leaked in ContextHeap.
> The heap traversal shows the addresses and the allocated size that were part of context Heap that was leaking
> 0x7fdef4cc69b8 336
> 0x7fdef4cc6bc8 336
> 0x7fdef4cc6d18 336
> 0x7fdef4cc6e68 336
> 0x7fdef4cc6fb8 336
> 0x7fdef4cc71e0 336
> 0x7fdef4cc7330 336
> 0x7fdef4cc7480 336
> The actual address of the objects is 16 bytes from the above address
> (gdb) p *(ComDiagsArea *)0x7fdef4cc69c8
> $9 = {
> <IpcMessageObj> = {
> _vptr.IpcMessageObj = 0x7fdfbe4bbc50,
> s_ = {
> objType_ = 13501,
> objVersion_ = 0,
> refCount_ = 1,
> objLength_ = 0,
> next_ = 0x0,
> endianness_ = 1 '\001',
> spare1_ = 0 '\000',
> spare2_ = 0,
> vPtrPad_ = 0x0
> }
> },
> members of ComDiagsArea:
> collHeapPtr_ = 0x7fdfb18eb128,
> errors_ = {
> <NACollection<ComDiagsArea::DiagsCondition*>> = {
> <NABasicObject> = {
> _vptr.NABasicObject = 0x7fdfbe4bbf10,
> h_ = 0x0
> },
> members of NACollection<ComDiagsArea::DiagsCondition*>:
> maxLength_ = 0,
> usedLength_ = 0,
> entries_ = 0,
> arr_ = 0x0,
> usages_ = 0x0,
> heap_ = 0x7fdfb18eb128
> },
> members of NAList<ComDiagsArea::DiagsCondition*>:
> first_ = 111111111,
> last_ = 111111111,
> userIndexCache_ = 111111111,
> arrayIndexCache_ = 111111111
> },
> warnings_ = {
> ---Type <return> to continue, or q <return> to quit---
> <NACollection<ComDiagsArea::DiagsCondition*>> = {
> <NABasicObject> = {
> _vptr.NABasicObject = 0x7fdfbe4bbf10,
> h_ = 0x0
> },
> members of NACollection<ComDiagsArea::DiagsCondition*>:
> maxLength_ = 0,
> usedLength_ = 0,
> entries_ = 0,
> arr_ = 0x0,
> usages_ = 0x0,
> heap_ = 0x7fdfb18eb128
> },
> members of NAList<ComDiagsArea::DiagsCondition*>:
> first_ = 111111111,
> last_ = 111111111,
> userIndexCache_ = 111111111,
> arrayIndexCache_ = 111111111
> },
> newCondition_ = 0x0,
> areMore_ = 0,
> lengthLimit_ = 30,
> rowCount_ = 0,
> theSQLFunction_ = 0,
> maxDiagsId_ = 0,
> avgStreamWaitTime_ = -1,
> cost_ = 0,
> flags_ = 0,
> rowsetRowCountArray_ = 0x0,
> fillers_ = '\000' <repeats 59 times>
> }
> (gdb) (gdb) p *(NAHeap *)0x7fdfb18eb128
> $10 = {
> <NAMemory> = {
> <NABasicObject> = {
> _vptr.NABasicObject = 0x7fdfc1001870,
> h_ = 0x0
> },
> members of NAMemory:
> name_ = "Heap in ContextCli\000\000",
> type_ = NAMemory::DERIVED_MEMORY,
> initialSize_ = 524288,
> maximumSize_ = 18446744073709551615,
> incrementSize_ = 4194304,
> parent_ = 0xf18b38,
> firstBlk_ = 0x7f3a44f75030,
> allocSize_ = 1375405192,
> upperLimit_ = 0,
> highWaterMark_ = 1447646816,
> intervalWaterMark_ = 1447646816,
> allocCnt_ = 2837663,
> totalSize_ = 1529356096,
> blockCnt_ = 381,
> thBlockCnt_ = 40,
> segGlobals_ = 0x0,
> memoryList_ = 0x7fdfb0e7aac0,
> lastListEntry_ = 0x7fdeef140608,
> nextEntry_ = 0x7fdfb18f12c8,
> debugLevel_ = 0,
> heapJumpBuf_ = 0xf18a30,
> exhaustedMem_ = 0,
> errorsMask_ = 0,
> heapID_ = {
> heapNum = -1
> },
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